Tansy ragwort (Senecio jacobaea), a potential menace to livestock.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology* / Q000517:prevention & control; D006734:Horse Diseases / Q000209:etiology*; D006736:Horses; D010939:Plant Poisoning / Q000517:prevention & control / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000209:etiology*; D014481:United States